Purpose
To minimize land and water contamination by ensuring that underground storage tank facility owners achieve and maintain compliance with applicable regulations, and that they cease operation if compliance cannot be maintained.

Applicability
Applies to owners of all underground storage tank (UST) facilities having an individual tank capacity greater than 110 gallons or of unknown size that store a regulated substance. Does not apply to owners of non-residential heating oil USTs not larger than 1,100 gallons and all residential heating oil USTs.